Demonstrating another custom diaphragm.

[Marco Gilardetti]

Perhaps I missed how you make these custom diaphragms in a previous thread. Are they made using a standard mica base, to which some dampening compound is pasted in the central area? Coincidentally, I have observed many times that the sound of a soundbox improves (or at least to my ears it does) if the diaphragm is a bit dampened: it helps avoiding rattles, and the sound feels more balanced in the high tones end of the spectrum.

[Phonoboy]

Perhaps I missed how you make these custom diaphragms in a previous thread. Are they made using a standard mica base, to which some dampening compound is pasted in the central area? Coincidentally, I have observed many times that the sound of a soundbox improves (or at least to my ears it does) if the diaphragm is a bit dampened: it helps avoiding rattles, and the sound feels more balanced in the high tones end of the spectrum.

They're of a rice paper and fiberglass resin base with a polystyrene stiffener. Edison did use stepped mica diaphragms in some cylinder machines.

[Victrolacollector]

I finally had some time today to make a installation, test and video of the diaphragm which he sent me for testing.

I installed it in my Victrola No. 2 and it worked great. I decided I would check one of my lateral reproducers that I use on an adapter, and installed it into this reproducer and it works great (fortunately, the reproducer diaphragm is the same as a Victrola No. 2).

Here is the video, you may hear some distortion in the video which is not present in the actual recording.

https://www.youtube.com/watch?v=oQ2A3gl1nXs

Great job!

Jerry P.

[Phonoboy]

I finally had some time today to make a installation, test and video of Nick's diaphragm which he sent me for testing.

I installed it in my Victrola No. 2 and it worked great. I decided I would check one of my lateral reproducers that I use on an adapter, and installed it into this reproducer and it works great (fortunately, the reproducer diaphragm is the same as a Victrola No. 2).

Here is the video, you may hear some distortion in the video which is not present in the actual recording.

https://www.youtube.com/watch?v=oQ2A3gl1nXs

Great Job Nick!

Jerry P.

Wrong fourm member, but im glad you like it. Thanks.

[Valecnik]

It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?

An electric demo as promised.
https://youtu.be/7DdBPSuCV_s

It sounds very good. Rudy Valley I think?

What type of needle did you use?

[Phonoboy]

It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?

An electric demo as promised.
https://youtu.be/7DdBPSuCV_s

It sounds very good. Rudy Valley I think?

What type of needle did you use?

I used a medium needle on that one. Thanks.

[donniej]

Sounds absolutely incredible!
Do you mind if I ask how thick the rice paper is?

[CarlosV]

It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?

An electric demo as promised.
https://youtu.be/7DdBPSuCV_s

Indeed it sounds great, it is a vast improvement over the mica, congratulations for the inventiveness!

[Phonoboy]

Sounds absolutely incredible!
Do you mind if I ask how thick the rice paper is?

0.0125 ish"

[Phonoboy]

It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?

An electric demo as promised.
https://youtu.be/7DdBPSuCV_s

Indeed it sounds great, it is a vast improvement over the mica, congratulations for the inventiveness!

I appreciate that. Thanks.